Hello, I was wondering if anyone knew of a good way to get R or ESS to stop executing the rest of the code beyond the point at which an error occurs if I am evaluating a region or buffer (I've only found the opposite request in the help archives). I was looking in the R help files but option(error=stop) will only stop execution of the offending function or statement but not those that follow it. Thanks!
+1
A:
?break
Only gets you out of loop.
?try
Lets you set up code that might fail and gracefully recover.
DWin
2009-09-16 02:20:17
Thanks, but when working interactively I don't want to wrap the line or region in try() or tryCatch() each time, but I suppose that would technically do it...
Stephen
2009-09-16 05:54:54
+3
A:
Hey Stephen,
According to the ESS manual, this should work: C-c C-c (comint-interrupt-subjob) Sends a Control-C signal to the ESS process. This has the effect of aborting the current command.
John Fox has a website where he offers a configuration for ESS. In it, he has this function: (defun stop-R ()
"Interrupt R process in lower window."
(interactive)
(select-window win2)
(comint-interrupt-subjob)
(select-window win1))
You should be able to add this function to the menu in XEmacs using: (defun R-menu ()
"Hook to install R menu and sub-menus"
(add-menu-item '("ESS" "R") "Interrupt computation" 'stop-R ) ) (add-hook 'ess-mode-hook 'R-menu)
You might check out the rest of his configuration file and documentation to see if it interests you. I haven't tried this yet, but I hope that it works for you!
Charlie
Charlie
2009-09-26 08:14:28
Thank you Charlie - I am familiar with C-c C-c but this is for manually stopping a process in progress, regardless of errors (as I understand it). I may look into modifying eval-region or eval-buffer to call this function when an error occurs...
Stephen
2009-09-27 09:18:37
+1
A:
If R/ESS is hogging up so much compute time that your emacs/ESS is unresponsive to C-c C-c, you can also save it by sending an INTERRUPT signal from the terminal.
First: figure out R's processID using top or ps. (mine was 98490
Then:
kill -2 98490
That sends an interrupt signal and you get your ESS/Emacs and R session back
Yannick Wurm
2009-11-16 19:38:23